As far as I'm aware buying stolen property isn't a strict liability crime.
That is seriously fucked up. From that wikipedia article:
> a pharmacist supplied drugs to a patient who presented a forged doctor's prescription, but was convicted even though the House of Lords accepted that the pharmacist was blameless.
> a 15-year-old boy was convicted of statutory rape of a child under 13, a crime under Section 5 of the Sexual Offences Act 2003. The prosecution accepted the boy's claim that he had believed the 12-year-old girl to be 15, but he was nevertheless sentenced to 12 months' detention.
When I read this, I'm very happy to live in a more sane part of the world.
That is the distinction being made here, especially since in other parts of the world it's even legal to buy weed.